Control Fault

What does CF mean?

This fault indicates issues stemming from incorrectly set motor parameters, excessive load inertia, an inappropriate stopping method, or incorrect motor/drive wiring. It can also be triggered if a Run command is received while the motor is coasting or if line-to-line resistance tuning has not been completed. The drive detects this fault if the torque reference exceeds the torque limit for 3 seconds or longer during deceleration, posing a risk of uncontrolled stopping or motor damage.

• Incorrect motor nameplate data (e.g., E1-04, E1-05, E1-06) entered into the drive parameters.
• Excessive load inertia that the drive cannot control effectively with current tuning parameters.
• Incorrect motor phase wiring (U, V, W) between the drive output terminals and the motor.
• Inappropriate stopping method selected (C1-01) for the application's load characteristics.
• Logic error causing a 'Run' command to be active without a prior 'Start' command or proper sequence.

Click steps to track your progress.

1. 1

   Verify all motor nameplate data (Voltage, Current, Frequency, RPM, kW/HP) is accurately programmed (E1-04 to E1-09).

2. 2

   Perform an Auto-Tuning procedure (e.g., T1-01 = 1) to optimize motor parameters.

3. 3

   Confirm correct motor phase wiring (U, V, W) and terminal assignments at both the drive and motor.

4. 4

   Adjust C1-01 (Stop Method Selection) for either ramp-to-stop, coast-to-stop, or DC injection stop as appropriate.

5. 5

   Review the control logic from the PLC or external controller for correct Run/Stop command sequencing.